This works but you don't need to lose all that many hands in a row before your stake is huge compared to what you stand to recover. By the 20th hand you're over

This works but you don't need to lose all that many hands in a row before your stake is huge compared to what you stand to recover. By the 20th hand you're over $1M for the single bet and you've invested ~$500K to get this far, all to eventually win $1 per hand if you have the bank to cover it.